Forecast Details for Tamms, IL

Recent Locations: Tamms, IL  
Current Alerts for Tamms, IL: Flood Warning
Tonight: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 62. Northwest wind 3 to 5 mph.
Sunday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. North northeast wind 5 to 7 mph. Chance of precipitation is 60%.
Sunday Night: Showers and possibly a thunderstorm. Low around 63. North northeast wind around 6 mph becoming west northwest in the evening. Chance of precipitation is 80%.
Monday: Showers and possibly a thunderstorm. High near 80. East southeast wind 5 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 80%.
Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67. South wind 7 to 10 mph.
Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Breezy, with a south southwest wind 15 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.
Tuesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 67. Breezy, with a south southwest wind 14 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 60%.
Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Breezy, with a south wind 13 to 20 mph, with gusts as high as 30 mph.
Wednesday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 64. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 29 mph.
Thursday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 82. West wind 11 to 13 mph, with gusts as high as 20 mph.
Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 57. Northwest wind 8 to 10 mph.
Friday: A slight chance of showers. Sunny, with a high near 74. North northwest wind 9 to 16 mph, with gusts as high as 24 mph.
Friday Night: Mostly clear, with a low around 51. North northwest wind 10 to 14 mph, with gusts as high as 21 mph.
Saturday: Sunny, with a high near 72. Northwest wind 9 to 15 mph, with gusts as high as 22 mph.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Want to Receive our Free Daily Forecast Emails in your inbox by 5 a.m.?
There are no ads! Learn More
We respect your privacy and will not share or sell your email with anyone.

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Precipitation Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet